short time ago on msnbc's "morning joe," president obama's senior adviser cut off his mustache for a good cause, agreed to shave after raising more than a million dollars for epilepsy research. his wife runs a nonprofit organization dedicated to that cause. their oldest son has epilepsy. i think david looks good. >> a man can go without a mustache, but certainly a worthy cause for him to give it up. >> that mustache is older than i am, charlie. >> i won't ask. >>> it is hard to imagine why anyone would confess to a crime that they would not commit, but it does happen a lot, especially in chicago. this sunday, "60 minutes" looks why this city has seen twice as many false confession cases as any other. byron pitts interviewed one man after being exonerated after spending 15 years in prison. >> 17, still in high school, never been in serious trouble when another teenager from his neighborhood implicated him, vincent, michael and harold in the rape and murder of a 30-year-old prostitute named nina glover. >> did anyone ask you, did you murder this woman? >> that was the first thing they